Lamp



FIG. 1 is a front perspective view of a lamp, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines illustrating the support feature of the lamp in FIGS. 1, 2, 3, and 5 are included for the purpose of showing environmental structure and form no part of the claimed design. 

CLAIM I claim, the ornamental design for a lamp, as shown and described. 